Incinerating-furnace.



P. P. DUNDON.

INUINERATING FURNACE. APPLICATION FILED JUNE21,1907.

Patented Nov. 19, 1912.

4 SHBETS-SHEET 1.

MWENmR I 0 6. M

WITNESSES.

W w mm P. P. DUNDON.

INGINERATING FURNACE. 7 APPLICATION FILED JUNE 21, 1907.

Patented Nov. 19, 1912.

4 SHEETS-SHEET 2.

INVENTOR 7 AT TOHNE WITNESS ES P.F .DUNDON.

INGINERATING FURNACE.

APPLICATION FILED JUNE 21, 1907.

Patented Nov. 19,1912

4 SHEETS-SHEET 3.

l N; I I

iii 56 WITNESSES: INVENTOR BY m wwm k/ Aemm/ I pAIg/ AW'OR r P. P. DUNDO INGINERATING FUR APPL IIIIIIIIIIIIIIIIIIIIII 7.

1,044,868, Patented Nov. 19, 1912.

4SEEETS EEEEEE 4.

:5; Eyfl II:

' :i: it r 7.2 15 \T' 78 {i I I "r KKK-NM WITNESSES:

. WWFM neu ron STATES rarest" s.

PATRICK F. DU'NIDON, SAN FRANCISCO, CALIFOLENIF.

mannerisms-summon.

To all whom it may concern:

Be it known that I, PATRICK F. Dunnon, a citizen of the United States, residing at San Francisco, in the county of San Fran- 5 cisco and State of California, have invented certain new and useful improvements in lncinerating-Furnaces, of which the following is a specification.

This invention relates toan improved incinerating furnace for the destruction of garbage and waste material.

One of the objects is to provide a furnace of the character specified, self-contained in its nature, utilizing the heat generated from combustion to heat air circuitously circulated above the cells of the furnace, and creat ng in it a powerful forced draft involving the double function first, of removlng the odors in the building in which the furnace is housed, thus preventing their escaping therefrom into the outer atmosphere. and discharging the air thus highly heated and rapidly circulated through the grates of the furnace cells, whereby to create a forced draft therein to insure the quick and certain combustion of the garbage and refuse.

Another object is toprovide a furnace of such a type and so subdivided that inv one chamber where there is an accumulation of heat from the other cells, objects and material. such as carcasses of animal's may be deposited whereby to insure their cremation.

It has been found in practice with the best furnaces in use, that certain vegetables and fruits, and also-animal matter,- escape undee stroyed and afterward putrefy in the'dumps,

and it is a further object of my invention to positively avoid andobviate this objection, and to this end I have provided means for macerating into particles such substances as a preliminary to'their discharge through the furnace.

My improvements consist in a novel construction, arrangement and combination of parts constituting an organized furnace and apparatus as hereinafter described and illustrated by drawings that form a part of this specification.

Figure 1 IS a longitud nal elevation mainly in section of an inc neratmg furnace constructed according to my invention showing the arrangement and relation of the various parts; Fig. 2 1s a plan View Of the. same Specification of Letters Patent.

Application filed June21, 1907.

Patents-t.

Serial No. 380,096.

furnace with parts broken away; Fig. 3 is an end view of Fig. 1; Fig. 4 is a transverse section on the line O-G in Fig. 1; 5 is an enlarged transverse section on the same line as Fig. 4, showing details and fire brick lining, which-has been omitted in other figures for the sake of distinctness; Fig. 6 is a side View of a modified form of crushing rollers to grind or disintegrate the debris from the incinerating furnace; Fig. 7 is an 3 end View of Fig. 6; Fig. 8 is a front view of one of-these sealed doors for closing the incinerating furnace; and Fig. 9 is an edge view of Fig. 8.

Corresponding parts are indicated by the 71% same numerals of reference in the various figures of the drawings.

The complete combustion of garbage presents many different problems, and apparatus for that fpurpose has passed through a Wide range 0 modification. Some of the elements or parts of such furnaces are common to all, but experiments show that the best results are attained by tentative procedure and observance of the conditions and phenonieha of combustion in each case.

To .explain my methods and means em-. ployed, I Will now proceed to describe in general Way the apparatus, or plant em ployed in carrying out my invention with the main features of its construction and manner of operating.

The main body of the furnace 1 is structed of masonry in the usual manner.- with all interior surfaces and parts exposed to high temperature protected by a lining of fire brick or other refractory mat ial. The general form .is preferably rectangt as shown in the drawing, but circular other forms may be adopted when the cumstances of erection demand such mot-.1- fication or render it more desirable.

ash pit, as will be hereinafter morti fully set forth, for cleaning out the cells and ashpits. It may also be mentioned in this con nection that there are also doors for dress ing charges in the cells, as will be herein.- after described. The several grate surfaces 4 are all arranged at a convenient height above the ground or floor level. The spaces 5, below the grate bars 4, are used for ash pits, they being separated by partition walls 8, one air duct 6 for each unit of grate bars entering from the back of each pt. These partition walls 8 may extend slightly above the grate,- to separate the fires in each set if found desirable. The surrounding walls 14- of the furnaces extend above the roof arches to a suflicientheight so that an incloscd chamber 5) may be provided upon the top of the arch. On top of these vertically extending walls 14 are placed iron beams 12 of suitable form and size which reinforce the roof of this superposed chamber 9, which may be constructed of arches or tiles of masonry laid between the beams 12. The beams 12 may also serve the purpose of sustaining a floor 13, constructed over the furnace arches. In cases where the material to be burned is supplied from the top, the floor 13 can be extended any desired distance beyond the walls 14, both at the back and front, and of any required size.

In the center of the crown arch of each furnace, a suitable inlet 15 may be provided to permit a supply of the material to be burned to be admitted from the top, which inlets are surrounded by the chamber 9, each having a closing door 18 on top, that when shut will be level with the floor 13. These doors 18 may be moved laterally or vertically to open and close them, and in either case are balanced by counter-weights suspended from above as shown in Fig. l, and when closed rest on close fitting frames with asbestos or other refractory gaskets, so a's to prevent the escape of gases.

Below the roof of the chamber 9, .above the furnace arch. there is a series of partitions.10, as indicated by dotted lines only in Fig. 2 for the sake of distinctness, extending from the inside of the floor above to the interior of the arch of the furnace, so that air entering the pipe 34 from the chamber 9 to which it is admitted through the inlet 20, may pursue a circuitous course from one end of the chamber to the other, so as to attain j atest possible amount of heat in its passgc, the partitionsfi attaining this result by forcing the air to travel the longest. possible distance through the chamber and to lQuCli all parts of the cl'iamher in its circulation.

The air after being heated in the chainher 9 passes through the by- 'iass pi pc 1' the chamber 4-0. which contains a these tubes it is further heated by the hot gases of combustion which circulate in the chamber and pass through it on their way to the stack or chimney. The pipe 7 then conducts the heated air to the fan 19, which forces it into the separate ash pits 5, by means of the pipes 6, where it creates a strong draft through the grate bars and finally mingles with the gases of combustion. In this way, the air is circulated around and between the tubes of the hot air chamber, where it is heated to a high degree, after which it is discharged into the ash pits as forced draft. \Vhen the fan is in opera tion and this circulation is'talring place, great volumes of air are drawn in through the inlet 20 from the building in uhich the furnace is located, so that the foul odors which are produced by the garbage within the building will be caught and toxcibly sent through the fires, keeping the atmosphere within the building pure and free from odors. hen more than one incinerating cell 3 is contained in one structure, they are all arranged under one common arch, or constitute one continuous furnace, excepting that each unit of grates may be separated by the partition walls 8 that project above the surface of the grates. In this manner the products of comhuetimi from all of the cells are confined and arch, and in their passage, toward. ney after leavin the last furr products of combustion pass 0' wall 22, which separates the inc furnaces 3 from theadjoining co chamber 23. The chamber is th. the end of a series of incinerating furnaces and all the products of combustion are obliged to pass through the latter and are accumulated therein before assing away, thus attaining a very high egree of re aperature sufficient to destroy all impure gases that have passed from the incincrating furnaces. Means for admitting air to the chamber is provided to produce complete combustion. An excessive degree of heat is obtained in this combustion chamber concentration therein and accumulation of products of combustion, and. consequently it 1 is employed for the disposal ofdead aninials, and it might also be utilized for other PHI'POSBS.

always maintained substantially constant, and more surely consumes all noxious gases coming from the furnace cells.

The products of combustion after leaving the chamber 23 pass through the chamber 27 and through the opening 29 into the chainber 30. This chamber a. compartment situin and around the boiler 32, there is also a second arch passage A (see Fig. lead ing to a by-pass pipe B, so that the products of combustion may pass around the chamber 30 through said by-pass pipe Without coming in contact With the boiler 32. This change of the course of the gases is controlled by opening and closing the dampers 35.

The object of the chamber 30 is to utilize and apply heat for motive power, preferably by means of a steam boiler as before eX- plained, but other means of utilizing the heat produced may be employed, such as the production of illuminating gases to use as a substitute for expensive fuel. Motive power is thus provided for as a required element in the operation of the furnaces as will appear upon further description.

After the products of combustion have made their passage through the chamber 30, they pass through an opening C, shown in dotted lines in Fig. 1. in the Wall of this chamber, the arrows indicating the direction the products of combustion take, and circulate between and around a series of tubes 39 in the chamber 41, which latter con-- through an opening 37 and traverse the chamber 40, passing around and heating the tubes 38 through which circulates the hot air. From the chamber 40. no further use being made of the gases, they pass at 44 into the chimney 45 At the base of the chimney 45 is pro- 'are placed doors 5% to" vided a chum to the line .28 passing tin-cu I at the base, the there any lig by the dral trance 4% to sided with i vent light material out through the Gilli in the center ()i to ,1

cleaning doorst) and 51, 5, for the purpose clinker from each furnace. front Walls. opposite l it after the garbage The doors 51 being 'L are provided With A slightly modified form of rolls" at 53 in Figs. 6 and 7,. in which tion some of the gear Wheels are ipurpose of these grindin olls conveyors 56 is that cleaned, the ashes the grates will tall front or the doors. p ing rolls, and E be conveyed :2 rec into receptacle veyer 57 WT and elevate the material n cars. As charged lo ers, they Where the in the usual chutes 66.

Above in erably on -i I ing or grinding rollers 60, as smoun. in Fig. 4:, for the purpose crushing ing vegetable or other matter become inclossd in a ca bon she. process of combustion and thus that will consume or disintegrate o stances, and also to crush the WW"- them. Means "to supply and material to the mac ul ce ma place.

The motive the same are e would, if detailed, only confuse the drawings and render them less clear. marks apply to the devices 69 for operating dampers, counterweights (33 to balance doors, driving gearing at 64,- where power is applied, countcrweights (S5 for doors 50, and in other similar cases. The sealed doors shown in Figs. 8 and 9 are not particularly described here because of the subject matter of Letters Patent No. 653 503 ranted to me.

on the 10th day of July, 1900, for sealed doors.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. An incinerating furnace comprising a primary furnace, and a combustion chamher, said furnace and chamber each having a suitable inlet at the top, a hot air chamber, said primary furnace, combustion chamber and hot air chamber in communication with one another, an air heater in the hot air chamber, an inclosed chamber located immediately above the furnace and combustion chamber, and having battle partitions therein for causing a circuitous passage of air therethrough, and a pipe leading from the inclosed chamber to the hot air heater.

2. An incinerating furnace comprising a primary furnace, a combustion chamber, a supplementary chamber, .and a hot air chamber, all in communication with one another, an air heater in the hot air chamber, a superposed inclosed chamber located above the primary furnace, the coinbustion chamber and. the supplementary chamber, means for causing a circuitous passage of air therethrough, and a pipe leading from the inclosed chamber to the air heater.

3. An incinerating furnace comprising a primary furnace and combustion chamber, a boiler chamber, a boiler therein, a feed water chamber, a feed water heater therein, a hot air-chamber, an air heater therein and stack, said chambers in communication th/one another, and the products of com ion passing through said chamb an iosed chamber superposed above the primace and combustion chamber, a 1g therizfroni. to the air heater,

ni 'ig fron'i the air heater furnace and combustion These re- "iambcr, an air heater therein and and a pipe returning from the air heater to the grate of the furnace and combustion chamber, and a fan in communication with said pipes for creating a-forced feed of said highly heated air.

5. An incinerating furnace comprising a primary furnace and combustion chamber, a boiler chamber, a boiler therein, a feed water chamber, a feed water heater therein, a hot air chamber, an air heater therein and a stack, said chambers in communication with one another, and the products of combustion passing through said chambers, an inclosed chamber superposed above the primary furnace and combustion chamber, a pipe leading therefrom to the air. heater, and a pipe returning from the air heater to the grate of the furnace and. combustion chamber, the stack havin a screen therein, and also a water sink tirough which the products of combustion pass on their Way out of the stack.

6-. An incinerating furnace comprising a furnace proper and combustion chamber, both of which have inlets at the top, a supplementary chamber, a water tube boiler chamber, a boiler therein, means of communication between the supplementary .cham her and the water tube boiler chamber, and a hot air chamber, an air heater therein, the

products of combustion flowing through the boiler and hot air chambers, a stack, an inclosed chamber superposed above the furnace and combustion chamber, a pipe lead ing from this incloscd chamber to the air heater, a pipe leading from the latter, a fan for circulating the air through said inclosed chamber, pipes, and air heater, and pipes leading from the fan to the grates.

7. In an incinerating furnace, the combination with a combustion chamber, a supplementary chamber, a boiler chamber having a boiler therein, a feed-water heater, an air heater, said chambers and heater communieating with each other, means for shutting off the communication from the supplementary chamber to the boiler chamber, water heater, and air heater, of a chimney, a by-pass leading from the supplementary chamber to the chimney, a pipe for conducting air into the hot air heater and for conducting the heated air to and discharging it beneath the grates of the combustion chamber, anc an inclosed char r superimposed ah.

air is heater.

5%. in an incinerating furnace, the combinatimi with a combustion chamber, boiler clnimbcr, and boiler therein, and tubular air and water heaters through the tubes of which air and w ter circulate respectively whil. to products of combustion from the ion chamber and boiler chamber circuiale around and ali'long the tubes of he conducted by saidv pipe to the air the combustion Cl12;i.,:DQI' from which.

aoeaeee air and Water heaters, of an inclosed chamber located over the combustion chamber to receive heat therefrom, a pipe leading from the inclosed chamber to-the air heater, and a pipe leading from the air heater.

9. In an incinerating furnace, the combination Wltll a combustion chamber, boiler chamber, and boiler therein, and tubular air and Water heaters throu 'h the-tubes. of

the inclosed chamber to the air heater, and

' a pipe leading; from the air heater to a point below the grates of the combustion chamb r 10. in an incinerating" furnace, the co. f nation with a combustion chamber, boiler chamber, and boiler therein, and tubuiar air and Water heaters through the tubes of which air and water circulate respectively, While the products of combustion from the combustion chamber and boiler chamber circulate around and among the tubes of the air and Water heaters, of an inclosed chamber located over the combustion chamber to receive heat therefrom, a pipe leading from the inclosed chamber to the air heater, and a pipe leading from the air heater, and a supplementary chamber interposed between the combustion chamber and the boiler chamber, and in communication with and means forcontrolling and changing the course of the gases from the supplementary chamber, either to or around the boiler chamber.

11. In anincinerating furnace, the combination with a primary furnace, a combustion chamber, and an inclosed chamber located thereabove, the latter opening outside of the furnace, of an air heater, the gases from the primary furnace and combustion chamber flowing in contact with the air heater, a leading from the inclosed chamber to the air heater, a pipe leading from the air heater for discharging the heated air beneath the grates, and means for creatin a circula ion of air through the inclosed chamber, pipes and air heater. l

12. In an incinerating furnace, the combination With a primary furnace, a combustion chamber, and an inclbs'ed chamber located both,

thereabove, the latter opening outside the furnace, of an air heater, the gases from the primary furnace and combustion chamber flowing in contact with the air heater, a pipe leading from the inclosed cl'iamber to the air heater, a pipe leading from the air heater for discharging the heated air beneath the grates and n cans for creating a circulation of air through the inclosed chamber, pipes, and air heater, and a stack into Which products of combustion pass from air heater, said stack having a screen in the base thereof, to interceptthe light fragments and prevent their escape into the atmospher 13. In, an incinerating furnace, the combination with a primary furnace, a combustion chamber and an inclosed chamber located thereabove, the latter opening outside the furnace the furnace and combustion chami l l 1 her having suitacle nlets through their" crown-arches, and maceration rollers located above one of these openings tor the purpose of crushing the material on its Way into the furnace, of an air heater, the gases from the primary furnace, and combustion chamber flowing in contactiuith the air heater, a pipe leading from the inclosed chamber to the air heater, a pipe leading from the air heater for discharging the heated air beneath the grates, and means for creating a circui of air through the inclosed chamber, pipes and air heater.

let. In an incinerating' furnace, the combination with primary furnace, combustici chamber, and supplementary chamber, all in communication u'ithone another, of a water tube boiler, a feed Water heater, an air heater a stack the ases from the nrnnarv a a 2-: l

furnace and combustion chamber flow contact Wit 1 the boilerand air heater, an closed chamber, a pipe leading therefrom. to the air heater, a bypass leading from the su olementar chamber to the stack, andigh the

i Vitnesses:

A. M. i-lonneuo, Trronas F. ECCLES.

the 

